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Extras > Intro to ANS > Flashcards

Intro to ANS Flashcards

1
Q

Typically, sympathetic stimulation is catabolic, meaning

A

fight or flight

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2
Q

Typically, Parasympathetic stimulation is anabolic, meaning

A

normal function and energy conservation (rest and digest)

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3
Q

the parasympathetic nervous system has a limited distrubution, meaning they are located in

A

head, neck, trunk viscera

NEVER in the body wall or extremities

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4
Q

The sympathetic nervous system distributes to

A

all vascular areas of the body

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5
Q

Glandular secretion is stimulated by the parasympathetic nervous system (except sweat glands) and can indirectly decrease

A

glandular secretion through vasoconsitriction

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6
Q

vasoconstriction is sympathetically stimulated except

A

coronary A.

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7
Q

Sympathetic Division (T1-L2)

Visceral distribution

A

sympathetic innervation to visceral structures; organs of the trunk

(heart, lungs, liver, gallbladder, GI, spleen, pancreas, kidneys, reproductive organs)

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8
Q

Sympathetic Division (T1-L2)

Visceral Distribution

Presynaptic Fibers (short)

A

cell bodies exist in the lateral horn

Always travel in Anterior Root

Always travel into Anterior Ramus

Quickly exit ramus and enter Paravertebral Ganglia

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9
Q

Sympathetic Division (T1-L2)

Visceral Distribution

Synaptic Options: Presynaptic Fibers can enter the Paravertebral Ganglion and

A
  • synpase onto a Postsynaptic Neuron in the same spinal level
  • ascend or descend to synapse on a Postsynaptic Neuron on a different spinal level
  • exit without synapsing and continue on through an Abdominopeolvic Spanchnic nerve on its way to a postsynaptic Neuron in a Prevertebral Ganglion
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10
Q

Sympathetic Division (T1-L2)

Visceral Distribution

Postsynaptic Fibers (long)

Cell bodies in the Paravertebral Ganglia

A

linked vertically to form sympathetic trunks on either side of the vertebral column.

Three Ganglion also exist in the Cervical, Lumbar, and Pelvic Regions

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11
Q

Sympathetic Division (T1-L2)

Visceral Distribution

Postsynaptic Fibers (long)

Cell bodies existing as Prevertebral ganglia

A

Prevertebral Ganglia include the ganglia and corresponding plexuses surrounding the main unpaired branches of the abdominal aorta

  • Celiac Ganglia
  • Superior Mesenteric Ganglion
  • Aorticorenal Ganglion
  • Inferior Mesenteric Ganglion
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12
Q

Parietal Distribution

A

sympathetic innervation to smooth muscles of the skin, blood vessles and sweat glands.

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13
Q

Parietal Distribution

Presynaptic Fibers (short)

A

Cell bodies exist in the lateral horn

Always travel in the Anterior Root

Always Travel into the Anterior Ramus

Quickly exit ramus and enters Paravertebral Ganglia

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14
Q

Parietal Distribution

Synaptic options

For Trunk Distrubtion, Presynaptic fibers enter

A

the paravertebral ganglion and synapse onto a postsynaptic neuron in the same spinal level

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15
Q

Parietal Distribution

Synaptic Options

For head, neck and upper extremity distribution, presynaptic fibers enter

A

the Paravertebral ganglion at their own level then ASCEND to synapse on a postsynaptic neuron in the cervical sympathetic trunk

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16
Q

Parietal Distribution

Synaptic Options

For perineum and lower extremity distributions, presynaptic fibers enter the

A

Paravertebral ganglion at their own level then DESCEND to synapse on a postsynaptic neuron in the abdominal and sacral sympathetic trunk

17
Q

Parietal Distribution

Postsynaptic Fibers (long)

  • Cell bodies exist in the
  • Postsynaptic Fibers exit the
A
  • Paravertebral Ganglia
  • Paravertebral Ganglion via Gray Rami Comminucantes back into the somatic nerve
18
Q

Parietal Distribution

Postsynaptic fibers (long)

Trunk Distribution: Trunk

A

postsynaptic fibers follow the posterior rami of the spinal nerves to innervate the smooth muscle and sweat glands of the back.

19
Q

Parietal Distribution

Postsynaptic Fibers (long)

Trunk Distribution: Anterior and Lateral Trunk

A

Postsynaptic fibers follow the anterior rami of the spinal nerves, which for the trunks are the: Intercostal, Thoracoabdominal and Subcostal Ns to innervate smooth muscle and sweat glands of the thoracic and abdominal body wall.

20
Q

Parietal Distribution

Postsynaptic Fibers (long)

Head, Neck and Upper Extremity Distribution: Head and Face

A

Postsynaptic fibers follow carotid N and enter the carotid periarterial plexus to innervate smooth muscle and sweat glands of the head and face

21
Q

Parietal Distribution

Postsynaptic Fibers

Head, Neck, and Upper Extremity Distribution: Posterior Neck

A

Postsynaptic fibers follow the posterior rami of the spinal nerves, such as the suboccipital, greater and leas occipital Nerves to innervate the smooth muscle and sweat glands of the posterior neck

22
Q

Parietal Distribution

Postsynaptic Fibers (long)

Head, Neck, and Upper Extremity Distribution: Anterior Neck and Upper Extremity

A

Postsynaptic Fibers follow the anterior Rami of the spinal nerves, which for the anterior neck make up the cervical plexus of nerves and for the upper extremity to make up the brachial plexus of nerves to ineervate the smooth muscle and sweat glands of the anterior neck and UE.

23
Q

Parietal Distribution

Postsynaptic Fibers (long)

Perineum and Lower Extremity Distribution: Butt

A

Postsynaptic fibers follow the posterior rami of the spinal nerves called cluneal nerves to inervate the smooth muscle and sweat glands of the buttocks

24
Q

Parietal Distribution

Postsynaptic fibers (long)

Perineum and Lower Extremity Distribution: Lumbar and Sacral

A

Postsynaptic fibers follow the anterior rami of spinal nerves which make up the lumbar and sacral plexuses to innervate smooth muscles and sweat glands of the perineum and LE

25
Q

Parasympathetic Nervous System (Craniosacral 3, 7, 9, 10, S2-4)

Presynaptic Fibers

A
  1. Nuclei in the brain stem and sacral spinal levels
  2. cranial components exits as cranial nerves

a. oculomotor N. (CN3)

b. facial N. (CN7)

c. glossopharyngeal N (CN9)

d. vagus N (CN10)

  1. Sacral Component exits the spinal levels as pelvic splanchnic nerves
26
Q

Parasympathetic Nervous System

Postsynaptic Fibers (usually short with ganglia/postsynaptic neurons near or in the target organ)

A
  1. Nuclei are in 4 speciifc cranial ganglia or in the wall of the target organ
    a. Ciliary ganglion (nerves from oculomotor)

b. Pterygopalatine ganglion (fibers from facial n)

c. submandibular ganglion (fibers from facial n)

d. otic ganglion (fibers from glossopharyngela n)

  1. Intrinsic parasympathetic ganglia (postsynaptic parasympathetic cell bodies located in walls of target organ)
27
Q

Autonomic plexuses

A

typicaly mixed sympathetic and parasympathetic plexuses that travel on the vasculature to carry the postsynaptic (for the sympathetic division) and presynaptic (for the parasympathetic division) to the target organs

28
Q

Autonomic Plexuses: Thorax

A

1. pulmonary plexus

2. cardiac plexus

3. aortic plexus

4. esophageal plexus

29
Q

autonomic plexus: abdomen

A

1. celiac plexus

2. hepatic plexus

3. superior mesenteric plexus

4. renal plexus

5. intermesenteric plexus

6. inferior mesenteric plexus

7. superior hypogastric plexus

30
Q

autonomic plexus: pelvis

A

1. inferior hypogastric pelvic plexus

2. vesical plexus

3. uterovaginal plexus

4. prostatic plexus

Extras (23 decks)

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